joining me is michael lighter nbc news terrorism expert. michael, what do you know from the -- from your -- excuse me -- from your sources about what happened that night? >> andrea, i think people are seeing, as the reporting gets more and more clear that this was coordinated, that it was probably independence to protest, but it's still difficult for anyone to know what the exact motivation was. likely associated with al qaeda associated groups, but whether or not it was planned just before the attack, whether or not this was planned for weeks ahead, that's what the intelligence community is still really does not know. >> at the same time, they had -- they had real-time individual, they te -- video on the security cameras of groups of heavily armed men invading the compound, setting off cans of diesel fuel that the smoke was so thick that the ambassador retreating to a bunker was on the ground, with his security officer, and couldn't breathe, couldn't see, they then retreated further to a bathroom, which had an exterior window, tried to get